Zero out allocated memory

src/clib/mem.c

@@ -37,7 +37,7 @@
 #include <clib/exec_protos.h>
 #define ALLOC_LIST(x) AllocVec(x, MEMF_ANY | MEMF_CLEAR)
 #define FREE_LIST(x) FreeVec(x)
-#define ALLOC_MEM(x, y) AllocPooled(x, y)
+#define ALLOC_MEM(x, y) AllocPooledZero(x, y)
 #define FREE_MEM(x, y, z) FreePooled(x, y, z)
 #define Debug(x, y, z)
 #else
@@ -85,6 +85,31 @@ struct MemoryList *list = nullptr;
 void alloc_error(char *, size_t);
 void dealloc_error(char *, void *);
 
+#if defined(AMIGA)
+
+static void MemZero(void *address, ULONG size)
+{
+    char *c = (char *)address;
+    int n = size;
+    do
+    {
+        *c++ = '\0';
+    } while (--n);
+}
+
+static void *AllocPooledZero(void *pool, size_t size)
+{
+    ULONG memSize = (ULONG)size;
+    void *memory = AllocPooled(pool, memSize);
+    if (memory != NULL)
+    {
+        MemZero(memory, memSize);
+    }
+    return memory;
+}
+
+#endif
+
 /**
  * @brief Allocate memory and add it to the global memory list.
  */
@@ -112,11 +137,11 @@ void *AllocMemSafe(size_t size)
     }
 
 #ifdef P64BIT
-    // Align to bytes of 8
+    // Align to bytes of 8, remove 0 bytes allocations
-    allocsize = (size + 7) & ~0x07;
+    allocsize = (size + 8) & ~0x07;
 #else
-    // Align to bytes of 4
+    // Align to bytes of 4, remove 0 bytes allocations
-    allocsize = (size + 3) & ~0x03;
+    allocsize = (size + 4) & ~0x03;
 #endif
 
     newblock = (struct MemoryBlock *)ALLOC_MEM(list->pool, sizeof(struct MemoryBlock));